Update version strings

src/Info.plist

 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleGetInfoString</key>
-	<string>Typica 1.5.0</string>
+	<string>Typica 1.6.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleExecutable</key>
 	<key>CFBundleDisplayName</key>
 	<string>Typica</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.5.0</string>
+	<string>1.6.0</string>
 	<key>CFBundleVersion</key>
-	<string>1.5.0</string>
+	<string>1.6.0</string>
 	<key>NSHumanReadableCopyright</key>
 	<string>© 2007–2013 Neal Wilson</string>
 </dict>

src/resources/html/about.html

 				<div id="topbanner">
 					<a href="http://www.randomfield.com/programs/typica/"><img src="../icons/appicons/logo96.png" height="96px" width="96px" alt="Typica logo" /></a>
 					<h1><a href="http://www.randomfield.com/programs/typica/">Typica</a></h1>
-					<h2>Version 1.5</h2>
+					<h2>Version 1.6</h2>
 				</div>
 			<div id="maintext">
 				<p>Copyright &copy; 2007&ndash;2013 Neal Evan Wilson

src/typica.rc

 		BLOCK "040904b0"
 		BEGIN
 			VALUE "CompanyName", "Wilson's Coffee & Tea\0"
-			VALUE "FileDescription", "Typica 1.5.0\0"
-			VALUE "FileVersion", "1.5.0\0"
+			VALUE "FileDescription", "Typica 1.6.0\0"
+			VALUE "FileVersion", "1.6.0\0"
 			VALUE "InternalName", "Typica\0"
 			VALUE "LegalCopyright", "Copyright 2007-2013 Neal Evan Wilson\0"
 			VALUE "OriginalFilename", "Typica.exe\0"
 			VALUE "ProductName", "Typica\0"
-			VALUE "ProductVersion", "1.5.0\0"
+			VALUE "ProductVersion", "1.6.0\0"
 		END
 	END
 	BLOCK "VarFileInfo"